Dyeing compound and process of producing the same.



UNITED PASIENT' OFFICE.

GEORGE S. WHITTY, OF NEW YORK, N. Y., ASSIGN OR TO F. W. DEVOE & C. T. RAYNOLDS COMPANY, OF NEW YORK, N. Y.

DYEING COMPOUND AND PROCESS OF PRODUCING THE SAME.

No Drawing.

T 0 all whom it may concern:

Be it known that I, GEORGE S. VVHITTY, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, city and State of New York, have invented a new and useful Dyeing Compound and Process of Producing the Same, of which the following is a specification.

I'Ieretofore it has ordinarily been found necessary to adapt the dyeing material to same fabric to a second dyeing process with dyes of a different kind or class. This-not only increases the expense of the process but likewise in domestic use, where nogreat skill on the part of the operator exists, results are frequently quite disappointing.

I have discm ered that by a combination of different dyes and chemicals dyeing materials can be made, which are adapted to be put up in convenient, safe and permanent i' rm for transportation, commercial hand ing and for use,which will dye all fibrous materials, animal as well as vegetable, and whether separate or combined in the same fabric, with substantially equal perfection, giving satisfactory results in practically all instances.

The ingredients I use, the method of com bining them and the manner in which I prepare them for presentation upon the market are as follows: I take coal tar dyes, either direct substantive colors, or a mixture of direct and acid colors, or of direct and basic colors, as the color or shade of color may require, and in the proportion of one tenth of one per cent. to six per cent. of the weight of the material to be dyed; in other words, to one hundred pounds of the fabric or fibrous material which is to be dyed, I use from one and six tenths ounces to ninety six ounces of the dye, depending upon the color, or shade of color desired, and also depending upon whether Specification of Letters Patent.

Application filed July 22, 1910. Serial N o. 573,273.

Patented Jan. 1'7, 1911.

or not the material has already been dyed with the same or another color which has to be overcome. 'This dye or mixture of dyes is reduced to dry powdered condition. I then, in order that it may be conveniently prepared for presentation upon the market in such manner that an uninformed user may be sure of the quantity of dye to be used to produce the desired effect, make it up in two forms, first, in that of cakes or tablets, and second, in that of a paste which I prefer to inclose in an ordinary collapsible tube such as is used by artists fortheir'paints.

In the manufacture of cakes or tablets I proceed as follows: I first make a paste or dough-like mass of gum tragacanth,-dextrin, or similar material with Water, adding a suitable percentage, 30 to 50 per cent. of the weight of the dough-like mass more or less, of an accelerating agent so called, such as a suitable salt, such, for example, as chlorid of sodium, sodium sulfate, sodium phosphate, borax,'or sodium carbonate, working the material between rollers or otherwise until it attains the consistency of a stiff dough, during which working I incorporate the desired amount of dyeing material above stated in dry powdered condition, so that the resulting material is a homogeneous, evenly colored, stifl", dough-like layer or slab composed of the vehicle or extender, the I dye and the suitable salt. I then, by the use of suitable mechanical appliances, preferably when the material is partly dry, out the slab or layer into small cakes or tablets of the most convenient size or sizes to use in domestic or manufacturing processes, and the proportions of the materials compounded are such that each tablet will contain the desired amount or percentage of dyeing material to adapt it to dye a certain weight of fabric or fibrous material.

To prepare the material in paste form, so

that it may be conveniently used in collap-- sible paint tubes, I proceed as above described, except that I leave the material in a more plastic or fluid condition than when making the cakes or tablets and also for making the paste-like product I can employ glycerin in addition to gum tragacanth or dextrin as the vehicle or extender. The re sulting. mass is a soft, homogeneous paste which may be readily ejected from the collapsible tubes referred to upon removing the cap or cover thereof and compressing the body of the tube, whereby more or less of the dyeing material will exude from the tablets, or the desired amount of the dye paste will be dissolved in a suitable amount of water, sufficient to cover the material tov be dyed. The dyeing operation will be carried out by heating the bath to such degree and for such length of time as the material to be dyed shall require. a

It is obvious that changes may be made in the details of compounding the materials and the proportions mentioned by me with-p out departing from the essentials of the invention.

I claim: 1. A dyein compound in paste form consisting of coa tar dyes compounded with an accelerating agent, a vehicle or extender and water.

2. The process described of making a dyeing compound consisting in reducing coal tar dyes to dry powdered condition, reducing gum tragacanth to a pasty "or doughlike consistency with water and mixing the powdered dye and an accelerating agent with the paste or dough into a homogeneous mass.

3. The process.describe'd-ofmaking a dyeing compound consisting in reducing coal tar dyes to dry powdered condition, reducing gum tragacan'th'to a pasty or dough-like consistency with water, mixing the powdered dye and an accelerating agent with the paste or dough into a homogeneous mass and drying the same into cakes or tablets.

In witness whereof I have signed my name tothis specification in the presence of two subscribing witnesses.

GEORGE s. WHITTY.

Witnesses:

PHILLIPS ABBOTT, EDWIN F. VALENTINE. 

